Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f81ef75d64d5b3d…

MALICIOUS

PDF

62.3 KB Created: 2020-08-15 10:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec0914c456ea54363a5a1ebb5ef2124f SHA-1: b88bbf35bbb3a191478acbe97f84258fb5403fc8 SHA-256: 1f81ef75d64d5b3df2737265a728445014a1329080359baebf7dad9ef9997037
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a song title. The PDF also hosts a large number of links to other PDFs on Shopify, likely for SEO manipulation to improve the ranking of the malicious redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ttraff.com/pify?keyword=woh+pehli+baar+song
    • http://files.hannahsworldtravels.com/uploads/1/3/1/6/131607063/zazab_lokodabikudin_dasurawimefete_dajazozelaj.pdf
    • http://garod.nauvoograpefestival.com/uploads/1/3/1/4/131407406/523daae.pdf
    • http://files.dovergreekfestival.com/uploads/1/3/1/1/131163601/vefedifiveposufole.pdf
    • http://files.claysmithcreativesltd.com/uploads/1/3/2/6/132695258/rebeze-rinafojaf-fofinata.pdf
    • http://files.mcallikat.com/uploads/1/3/0/8/130873826/wukatozufeledotuga.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/penunivudalovifasutupef.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5911/files/87892927751.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/fajuguguburedikek.pdf
    • https://cdn.shopify.com/s/files/1/0435/5643/8165/files/argumentative_essay_sample_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/karom.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3313/files/chennai_corporation_property_tax_assessment_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/lagudusakarozibef.pdf
    • https://cdn.shopify.com/s/files/1/0432/7591/1321/files/xonixo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/fetosajalipuduxonelebop.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3031/files/93716617096.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/68618790657.pdf
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/xiwanemefakusodebed.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7351/files/83226400541.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aacf.bin
d46156b900be99ea3a582afc3703134ab35c843c34a93f09cef7fda8453bd66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAACF 5236 bytes
font_01_sfnt_off0000bc9b.bin
e7becffff8bad294fc580d53404810a9adea2ed24d7f97ea65d03c8fd7820e79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9B 10120 bytes
font_02_sfnt_off0000df83.bin
baf0fa2d09ded35e1785781e182fce6db3dc6cbac7f83a5e9acd281ab9ed2cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF83 3268 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.