Malicious PDF — malware analysis report

Static analysis result for SHA-256 491bbf4159be9989…

MALICIOUS

PDF

72.8 KB Created: 2020-10-11 16:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 12c71254766ad69621e37335259c7083 SHA-1: bf9e7002b866b34cc99fabb1feec5b0c7eaa2890 SHA-256: 491bbf4159be99895c04461074ca8bfa49eb81692901a4e52a9d82b858ba87ec
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. The embedded URL, https://ggtraff.ru/pify?keyword=b%2526w+companion+hitch+parts, is known to be associated with malicious infrastructure. No scripts were extracted, but the presence of a malicious URL strongly suggests an attempt to lure the user to a harmful site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/pify?keyword=b%2526w+companion+hitch+parts In PDF document text
    • https://site-1044201.mozfiles.com/files/1044201/gozovesavifi.pdfIn PDF document text
    • http://files.gcctraining.net/uploads/1/3/1/8/131858287/posanosit.pdfIn PDF document text
    • http://files.heritage-therapy.com/uploads/1/3/1/6/131637364/ab0842222f8a3.pdfIn PDF document text
    • http://ranupiz.geo-mac.com/uploads/1/3/1/3/131380128/jinavavejitijeka.pdfIn PDF document text
    • http://files.thistallawkwardgirl.com/uploads/1/3/2/3/132302910/0749012.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/first_try_triathlon_linden_mi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9546/7195/files/98211406551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/midland_hh54_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4909/3797/files/fluid_and_electrolyte_imbalance_nursing_care_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f23f578b-f124-42ea-a7a8-8ad168ba8ceb/pujifuruwogurolosovipowof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f83d2a-582d-4b35-a87a-5ece05d8e04c/xatuguma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c157bce-d91d-4cfe-9441-5d7858088e78/ninefodefaxeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77319ddc-c67c-4c56-b23c-45ed32ae017d/wotoxesesolilu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D0 7028 bytes
SHA-256: da41be7abf350e735b09c47e2798ad25e7e281223ffa806e84c393f5cba2b646
font_01_sfnt_off00007a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 4704 bytes
SHA-256: a4c5cce137aeff3bf318b25e486992ef866679dd64c878ade1abcc1e3b543389
font_02_sfnt_off00008af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF2 3532 bytes
SHA-256: e2c1648998d876e123eb9249e5f55ef15f4e1dfe70033eeacd4fb9b659aaf46e
font_03_sfnt_off0000964e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x964E 6216 bytes
SHA-256: c5ab2b944b10a4a60d50fd62541bd3d14ffea56a92be0497fe5d4311f1f9f9d7
font_04_sfnt_off0000a568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA568 2228 bytes
SHA-256: 2ad8dfb510f394fd22a4ec514659d57c95129b074902e5842d11a5c21d380399
font_05_sfnt_off0000af84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF84 14976 bytes
SHA-256: bff627e112da254c383938157ca9d0c30a2263e4c820737752fd5619f8d286ca
font_06_sfnt_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 16852 bytes
SHA-256: 2c4fac5b3aa2d67986e4de3ac017b983fec9c42127d78108af139ca7e1fd5845
font_07_sfnt_off0000f535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF535 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
font_08_sfnt_off000102f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F8 6164 bytes
SHA-256: fed0ab669d31b1cab478622a9128ddd6e68157d585f37678cb5603e138020477