Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab4a88563ff0339…

MALICIOUS

PDF

64.3 KB Created: 2020-08-11 05:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5e8d061ac451dd8af7649e476e8f2bb SHA-1: 07bb6d3206fdc8d1d0f980a665f38814fa5f40fc SHA-256: 1ab4a88563ff0339374a0578883f16641bba64099158da21f2056b4324d6a669
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at ttraff.com. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and appears to be junk data, but the presence of the malicious redirector URL is the primary indicator of malicious intent. 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=transatlantic+slave+trade+worksheet+pdf
    • http://semudisin.stgregoriosspokane.org/uploads/1/3/1/8/131858540/vewutoxafasafuse.pdf
    • http://files.glowmedica.com/uploads/1/3/2/6/132681463/samokinape.pdf
    • http://files.veeradonuts.com/uploads/1/3/1/3/131398076/4d408ced51.pdf
    • http://files.pinemountainyosemitelakelodge.com/uploads/1/3/1/1/131164236/bodor.pdf
    • https://cdn.shopify.com/s/files/1/0433/4967/2091/files/kagukorofijikeje.pdf
    • https://cdn.shopify.com/s/files/1/0447/2219/2537/files/surah_ar_rahman_full_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4911/5029/files/39372265061.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/mekuzejerivovudoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/72215103650.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/pamakesuzazelufaxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0013/3793/files/dishonored_2_achievement_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/bowujinanerenikujawanakez.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7991/files/snakes_cool_math.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/guzodatosiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/learn_portuguese_vocabulary.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_off0000b15c.bin
8e369b9dba261551212296c44ce9ccd3135ca81c2a92353a84b2b08519addffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB15C 5196 bytes
font_01_sfnt_off0000c30a.bin
4b2a9cc8703be1ac73be29680a67d6561c87b1e7137759544fe9c9871e944197		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC30A 10304 bytes
font_02_sfnt_off0000e645.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE645 4324 bytes

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