Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1759d424efc2f7…

MALICIOUS

PDF

62.2 KB Created: 2020-03-23 04:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ec41b64dccd0b11e2eaef06196d6083e SHA-1: c53f848c818e00010fbd5d8b0ff017d0ccb2b3bf SHA-256: 2a1759d424efc2f7171fbe188c22d01e529bbaf75ae7be3ffa9bee321fda2345
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO manipulation. The document body contains text related to geographical coordinates, likely a lure to disguise the malicious intent. The primary goal appears to be directing users to a network of potentially malicious websites, as indicated by the PDF_SEO_LINK_FARM heuristic and the numerous extracted URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://peakathleticsystems.com/uploads/1/3/0/9/130969312/130969312.html#que+es+la+latitud+y+la+longitud+y+altitud
    • http://trade-city-award.org/uploads/1/3/0/4/130489359/6655637.pdf
    • http://www.kriyadance.com/uploads/1/3/0/5/130588780/9308350.pdf
    • http://myopoa.com/uploads/1/3/0/2/130273788/931076818.pdf
    • http://mulberrybaptchurch.com/uploads/1/3/0/8/130874002/totavijili.pdf
    • http://noebrown.com/uploads/1/3/0/7/130739530/7109990.pdf
    • http://gwwatersolutions.com/uploads/1/3/0/5/130590153/zabulujenepemi.pdf
    • http://northcountryhomeinspection.com/uploads/1/3/0/4/130488631/393ff5bf5ac.pdf
    • http://rebiofficial.com/uploads/1/3/0/6/130605028/nesopuru.pdf
    • http://tiedyeharvest.com/uploads/1/3/0/6/130604240/21ef862e.pdf
    • http://www.instegratedcorrosion.com/uploads/1/3/0/8/130874326/55fb250.pdf
    • http://budget-ebikes.com/uploads/1/3/0/6/130604487/9486336.pdf
    • http://www.aandbevents.com/uploads/1/3/0/2/130287482/2598827.pdf
    • http://cpanel.littlecreekfarmllc.com/uploads/1/3/0/2/130271013/7658485.pdf
    • http://personalpetportraits.com/uploads/1/3/0/2/130287886/xudakekoned.pdf
    • http://arsenicofjabir.com/uploads/1/3/0/3/130379351/wedumitokekiwegeba.pdf
    • http://myrole.io/uploads/1/3/0/4/130483757/4139851.pdf
    • http://mudohcloud.com/uploads/1/3/0/7/130738863/4518563.pdf
    • http://remryservices.com/uploads/1/3/0/2/130289693/nenapowusirafe_sipujipevanid_tofomusekivum.pdf
    • http://mulheresqueinspiram40mais.com/uploads/1/3/0/7/130776321/d4ccbc1cfc331e3.pdf
    • http://harrisonashtonphoto.com/uploads/1/3/0/2/130270808/3adddf2.pdf
    • http://www.myway-gmbh.com/uploads/1/3/0/8/130814534/935c1.pdf
    • http://www.ninthstreetstyle.com/uploads/1/3/0/8/130813381/f3e65f87.pdf
    • http://southernbreezecandleco.us/uploads/1/3/0/7/130776341/4377128.pdf
    • http://webdisk.plomberiesmith.com/uploads/1/3/0/4/130483868/877e5.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bddc.bin
09eb06843e278a3381920e38e45fb37c4cc09eb23fe0a1062587f72cc6dbb161		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDDC 9688 bytes
font_01_sfnt_off0000e08b.bin
2c32c498f23db3cae400dac070c72b38d41a5d5dbe5041cbe08e7cee44e1acfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE08B 2648 bytes

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